Historical clue formulations

• L.G.B.T. symbol — 2021-02-28
• What the starts of the answers to the seven starred clues constitute — 2018-03-19
• Shower surprise — 2012-04-21
• With 39-Across, colorful dessert — 2007-06-28
• Pointer for gold seekers? — 2007-04-05
• _____Coalition — 1994-10-27